<template>
  <el-container class="main-container">
    <!-- 头部区域 -->
    <el-header>
      <!-- 左侧的 logo -->
      <img src="../../assets/images/logo.png" alt="" />
      <!-- 右侧的菜单 -->
      <el-menu class="el-menu-top" mode="horizontal" background-color="#23262E" text-color="#fff" active-text-color="#409EFF">
        <el-submenu index="1">
          <template slot="title">
            <!-- 头像 -->
            <img :src="userinfo.user_pic" alt="" v-if="userinfo.user_pic" class="avatar" />
            <img src="../../assets/logo.png" alt="" v-else class="avatar" />
            <span>个人中心</span>
          </template>
          <el-menu-item index="1-1"><i class="el-icon-s-operation"></i>基本资料</el-menu-item>
          <el-menu-item index="1-2"><i class="el-icon-camera"></i>更换头像</el-menu-item>
          <el-menu-item index="1-3"><i class="el-icon-key"></i>重置密码</el-menu-item>
        </el-submenu>
        <el-menu-item index="2" @click="logout"><i class="el-icon-switch-button"></i>退出</el-menu-item>
      </el-menu>
    </el-header>
    <el-container>
      <!-- 侧边栏区域 -->
      <el-aside width="200px">
        <el-aside width="200px">
          <div class="user-box">
            <img :src="userinfo&&userinfo.user_pic?userinfo.user_pic:AvatarImg" alt="" />
            <span>欢迎 {{userinfo.nickname||userinfo.username}}</span>
          </div>
        </el-aside>
        <el-menu :default-active="$route.path" router class="el-menu-vertical-demo" background-color="#23262E" text-color="#fff" active-text-color="#409EFF" unique-opened>
          <template v-for="(item , i) in menus">
            <!-- 不包含子菜单的“一级菜单” -->
            <el-menu-item :index="item.indexPath" :key="i" v-if="!item.children">
              <i :class="item.icon"></i>{{ item.title }}
            </el-menu-item>
            <!-- 包含子菜单的“一级菜单” -->
            <el-submenu :index="item.indexPath" :key="i" v-else>
              <template slot="title">
                <i :class="item.icon"></i>
                <span>{{ item.title }}</span>
              </template>
              <!-- 循环渲染“二级菜单” -->
              <el-menu-item v-for="(menu , n) in item.children" :key="n" :index="menu.indexPath">
                <i :class="menu.icon"></i>{{menu.title}}
              </el-menu-item>
            </el-submenu>
          </template>
        </el-menu>
      </el-aside>
      <el-container>
        <!-- 页面主体区域 -->
        <el-main>
          <router-view></router-view>
        </el-main>
        <!-- 底部 footer 区域 -->
        <el-footer>© www.itheima.com - 黑马程序员</el-footer>
      </el-container>
    </el-container>
  </el-container>
</template>

<script>
import { mapState, mapActions } from 'vuex'
import AvatarImg from '../../assets/logo.png'
export default {
  data () {
    return {
      AvatarImg,
      menus: []
    }
  },
  computed: {
    ...mapState(['userinfo', 'token'])
  },
  created () {
    if (this.token) {
      // 如果 token 有值，就请求数据
      this.initUserInfo()
      this.initMenus()
    } else {
      // 如果 token 没有值，就强制跳转到登录页面
      this.$router.push('/login')
    }
  },
  name: 'Home',
  methods: {
    logout () {
      // 1.提示是否退出
      this.$confirm('确认退出登录?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(() => {
        // 点击确定触发：清除token
        // 2. 清除token
        // 清空token
        this.$store.commit('updateToken', '')
        // 3. 跳转到登录页面
        this.$router.push('/login')
      }).catch(() => {
        // 点击取消触发
        this.$message.info('取消')
      })
    },
    async initMenus () {
      const res = await this.$http.get('/my/menus')
      //  console.log(res.data.data)
      if (res.data.code === 0) {
        this.menus = res.data.data
      }
    },
    ...mapActions(['initUserInfo'])
  }
}
</script>

<style lang="less" scoped>
.main-container {
  height: 100%;
  .el-header,
  .el-aside {
    background-color: #23262e;
    .el-submenu,
    .el-menu-item {
      width: 200px;
      user-select: none;
    }
  }
  .el-header {
    padding: 0;
    display: flex;
    justify-content: space-between;
  }
  .el-main {
    overflow-y: scroll;
    height: 0;
    background-color: #f2f2f2;
  }
  .el-footer {
    background-color: #eee;
    font-size: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
  }
}

.avatar {
  border-radius: 50%;
  width: 35px;
  height: 35px;
  background-color: #fff;
  margin-right: 10px;
  object-fit: cover;
}
// 左侧边栏用户信息区域
.user-box {
  height: 70px;
  display: flex;
  justify-content: center;
  align-items: center;
  border-top: 1px solid #000;
  border-bottom: 1px solid #000;
  user-select: none;
  img {
    width: 35px;
    height: 35px;
    border-radius: 50%;
    background-color: #fff;
    margin-right: 15px;
    object-fit: cover;
  }
  span {
    color: white;
    font-size: 12px;
  }
}
</style>
